package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.anno.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.enumeration.OperationType;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    CategoryMapper categoryMapper;
    @Autowired
    DishMapper dishMapper;
    @Autowired
    SetmealMapper setmealMapper;

    /**
     * 分页查询
     *
     * @param dto
     * @return
     */
    @Override
    public PageResult getCategory(CategoryPageQueryDTO dto) {

        PageHelper.startPage(dto.getPage(), dto.getPageSize());

        Page<Category> page = categoryMapper.getCategory(dto);
        long total = page.getTotal();
        List result = page.getResult();
        return new PageResult<>(total, result);

    }

    @Override
    @AutoFill(OperationType.UPDATE)
    public Category updataCategory(CategoryDTO dto) {
        Category category = new Category();

        BeanUtils.copyProperties(dto, category);

        category.setUpdateTime(LocalDateTime.now());

        category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.updataCategory(category);

        return category;

    }

    /**
     * 启用禁用
     *
     * @param status
     * @param id
     */
    @Override
    @AutoFill(OperationType.UPDATE)
    public void status(Integer status, Integer id) {
        Category build = Category.builder().status(status).id(Long.valueOf(id)).build();
        categoryMapper.updataCategory(build);

    }

    /**
     * 新增分类
     *
     * @param dto
     * @return
     */
    @Override
    @AutoFill(OperationType.INSERT)
    public void saveCategory(CategoryDTO dto) {

        Category category = new Category();
        //状态默认禁用
        category.setStatus(StatusConstant.DISABLE);

        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        category.setCreateUser(BaseContext.getCurrentId());
        BeanUtils.copyProperties(dto,category);
        categoryMapper.saveCategory(category);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Integer id) {

        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常

        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.deleteById(id);
    }

    @Override
    public List<Category> getCategoryList(Integer type) {
        List<Category> categorylist = categoryMapper.getCategoryList(type);
        return  categorylist;
    }


}
